Hayward Goldline Aqua Rite 40k Gallon Salt System is the largest selling system in the world. They automatically produce pure chlorine every day while the pool is being filtered and distribute it evenly throughout the pool via the return jets. Hayward Goldline Aqua Rite 40k Gallon Salt System use a low concentration of salt dissolved in the pool water (below the level of taste) to produce up to 1.45 lbs of chlorine daily, enough for all residential pools up to 40,000 gallons.